VICTOR FONSECA
I’m Victor Fonseca, a software engineer and AI training specialist based in Atibaia, Brazil, focused on making generative AI more reliable through rigorous evaluation and real-world engineering problem design.
About
I’m Victor Fonseca, a software engineer and AI training specialist based in Atibaia, Brazil, focused on making generative AI more reliable through rigorous evaluation and real-world engineering problem design. I build multi-file Python and C++ tasks, create robust test suites, and use careful prompt engineering and troubleshooting to surface edge cases and failure modes in model outputs.
I also contribute to multilingual content and model response grading, ensuring alignment with instructions, linguistic accuracy, and factual correctness. Alongside AI work, I’ve done hands-on software and systems diagnostics—root-cause analysis, flashing/restoration workflows, and firmware/OS repair—so my approach blends strong engineering fundamentals with disciplined validation practices.
- 4 years' experience
- Joined September 2026
Languages
- PortugueseFluent
- EnglishAdvanced
- Spanish; CastilianAdvanced
Industry experience
- Software & Internet
- Computers & Electronics
- Professional Services
- Education
- Media & Entertainment
Work experience
Reviewed and evaluated multi-language content and model outputs to ensure linguistic accuracy, factual correctness, and strict alignment with project instructions and quality benchmarks. Applied structured QA workflows and provided data-driven feedback to improve model reliability under international remote contract standards.
Designed and evaluated realistic software engineering tasks for AI model training, including bug resolution, feature implementation, and test generation in Python and C++. Developed complex multi-file coding scenarios and algorithmic problem-solving pipelines, conducted peer reviews, and applied RLHF-style practices to identify edge cases, ambiguities, and failure modes, improving dataset and reasoning quality.
Performed advanced software and operating system diagnostics to resolve complex technical issues using logical troubleshooting and root-cause analysis. Used specialized tools (e.g., 3uTools) for firmware restorations, isolated software bugs from hardware-level faults, troubleshot boot-loop issues and updates across mobile OS environments, and documented procedures to support security and operational stability.
Education
Certifications and awards
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